Oxygen and acetylene torch.



H. H. ARMSTRONG.

OXYGEN AND ACETYLENE TORCH.

APPLICATION FILED NOV. 14, 1914.

1 9 l '?6,@ 1 '7 Patented Mar. 21, 1916.

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HARRY HOWARD ARMSTRONG, OF CHICAGO, ILLINOIS, ASSIGNOR TO FIDELITY BRASSMANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

OXYGEN AND AOETYLENE TORCH.

Specification of Letters Patent. I

Patented Mar. 21, 1916.

To all whom it may concern Be it known that I, HARRY HOWARD ARM- STRONG,a citizen of the United States of America, and resident of 4011 Kenmoreavenue, Chicago, Cook county, Illinois, have invented a certain new anduseful Improvement in Oxygen and Acetylene Torches, of which thefollowing is a specification.

My invention relates to torches for burning oxygen and acetylene gas toproduce a flame of high temperature for use in metal work, such asbrazing, welding, etc., and for cutting pipes or other metal articles.

Generally stated, the object of my invention is to provide a novel andhighl-ye cient torch of the foregoing general charact r.

Special objects are to provide novel and improved means for controllingthe different gases as they pass through the head of the torch, andbefore they are allowed to combine and enter the nozzle from which theyfinally escape to form the flame; to provide a novel and improvedconstruction and arrangement involving an outer nozzle which is readilyremovable, and an inner removable nozzle for the oxygen, the two nozzlesbeing in line. with each other, and the construction being such that theremoval of both nozzles and the other interior parts is easily andconveniently accomplished without disturbing any of the pipeconnections; to provide a novel and simple construction which will tendto-produce a more perfect mixture of the gases before they reach thedischarge nozzle; and to provide certain details and features ofconstruction and combinations tending to increase the general efliciency'and certainty of operation of an oxygen and acetylene torch of thisparticular character.

To these and other useful ends my invention consists in mattershereinafter set forth and claimed.

In the accompanying drawings Figure 1 is a side elevation of an oxygenand acetylene torch embodying the principles of my invention. Fig. 2 isan enlarged sectional view of the head and nozzle of said torch. Fig. 3is a detail section on line 33 in Fig. 2. Fig. 4 is a section on line 44in Fig. 2. Fig. 5-is a section on line 55 in Fig. 2. Fig. 6 is a viewsimilar to Fig. 2, on a smaller scale, showin a different form of myinvention. Fig. is a section on line 7-7 in Fig. 6. Fig. 8 is anenlarged perspective of the perforated sleeve through WhlCh theacetylene gas passes in the construction shown in Fig. 6. Fig. 9 is aperspective of the inner nozzle shown in Fig. 6.

As thus illustrated, and referring to Figs. 1 to 5 inclusive, it will beseen that my invention comprises a handle A to which are connected theoxygen and acetylene flexible pipes a and a for supplying the gases. Theother end of said handle is provided with metal tubes or pipes a and awhich are curved downwardly to connect with the metal head B at theother end thereof. This head is provided with a chamber 1) containing ascreen b for the oxygen, the threaded end portion of the pipe a beingscrewed into this chamber. A similar chamber 1) is provided with asimilar screen 6 for the acetylene gas, the pipe a having its threadedend portion's'crewed into the outer end portion of this chamber. Thesaid head is formed with a relatively large chamber 6 containing alining b of some suitable noncombustible and heat resisting material,provided at one side with an opening I) which registers with the screenb thereby permitting the admission of the acetylene gas. The heatinsulating and porous and non-inflammable material If is employed forfilling the interior of the shell or lining b and is packed around thenozzle 6 which latter has its upper end threaded and removably screwedinto the head to communicate with the passage 6 leading from the screen5 whereby the oxygen is discharged throng an inner nozzle which projectsthrough the mass of porous 'and non-inflammable material b", such asasbestos or any other suitable substance. The lower end of the nozzle bis bluntly tapered or beveled at b, and its discharge orifice b ispreferably somewhat smaller than its bore b, whereby the oxvgen isdischarged in the form of a small jet. A closure in the form of athreaded plug b is screwed into the threaded lower end portion of thechamber 1) of the head, and extends a distance upwardly therein, beingprovided with a bluntly tapered' recess for the lower end of the nozzle6 it being observed that a slight space is left around the end of thenozzle. A ring 6 of suitable insulating material is supported on theplug'b and a perforated metal washer Z2 is in turn supported by saidring. A screen 6 is superimposed upon the said washer b and is en agedby the lower edge of the shell or lining b of the chamber, whereby theacetylene gas passing into the porous material I) must pass downwardthrough the perforation 5 of the washer, after passing through thescreen I)", and must then escape downwardly around the lower end of theinner nozzle. An outer nozzle b has its upper end screwed into thethreaded socket 6 formed in the bottom of the plug 5 said nozzle beingprovided with a bore b, and a relatively small discharge orifice b atits lower end. The upper end portion of the nozzle 5 is recessed toreceive the cone-shaped sheetmetal mixer bf which latter is hollow andprovided all around with a number of small slots, as shown, throughwhich the two gases must pass before reaching the bore 5 of thedischarge nozzle, it beingobserved that the gases are delii'ered to thelarger end of said mixer. Thus it will be seen that the two gases cometogether in the chamber 1) which is formed in the plug 6 at a pointbetween the adjacent ends of the two nozzles, and that the two gases arethoroughly mixed at this point, and by their passage through theapertured element In, before reaching the flame at the lower end of thedischarge nozzle. The heat is very intense, as is well known, but thematerials 5 and b serve to prevent the heat fromrhaving a dangerouseffect on the gases, and prevent the gases from catching fire within thehead. In addition, the porous screens and porous material in the path ofthe acetylene gas serve to prevent the flame from extending back intothe passages for this gas.

As shown in Figs. 6 to 9 inclusive, the construction is substantiallythe same as that previously described, but with the followingdifference: The inner nozzle C is provided with an offset 0, and theperforated cylinder D is fitted upon this ofi'set, thereby producing aspace at between the sides 0 of said fnezzle and the inner surface ofsaid sleeve. The lower end of this sleeve fits into the off-- set 0formed in the upper portion of the plug E, which latter is substantiallythe same as the plug 6 previously described.-

Thus, and with this construction, the acetylene gas passes from theporous material F and then through the perforations d of the sleeve D,through the space 03, and then through the space 6 between the lower endof the nozzle C and the upper end of the outer nozzle G, which latter issubstantially the same as the nozzle I) previously described It will beobserved, therefore, that with this construction the apertured elementor gas mixing device 6 is not eniployed between the two nozzles.

With either construction shown and described, both nozzles are easilremoved, and

by removing the threaded p-ug (b or E) practically all of the internalparts can be removed from the head for the purpose of repair orsubstitution. In each case the porous and non-inflammable and heatinsulating materials serve to minimize the possibility of danger fromoverheating, and serve to prevent the flame from extending back into thegas passages. An annular perforated element (5 or D) is arranged toencircle the inner nozzle to feed one gas to the mixing space at theinner end of the outer nozzle. 7

I do not limit myself to the exact construction shown and described.

lVhat I claim as my invention is 1. A welding torch comprising a head,an outer nozzle removably secured to said head, there being a mixingspace at the inner end of said nozzle, separate passages for supplyingdifferent gases to said head, and means within the head to protect thegases from ignition and keep them separate until the same are mixed atthe inner end of said nozzle, said means including an inner nozzle forone of said gases, arranged to discharge into the inner end of saidouter nozzle, and also including a perforated annular element encirclingsaid inner nozzle and porous material for feeding the other gas throughsaid element to said outer nozzle, said material extending around saidinner nozzle and beingnon-infiammable and a non-conductor of eat.

2. A welding torch comprising a head, an

outer nozzle removably secured to said head,

there being a mixing space at the inner end of said nozzle, separatepassages for supplying different gases to said head, and means withinthe head to protect the gases from ignition and keep them separate untilthe same are mixed at the inner end of said nozzle, said head having achamber communicating with one of said passages, said means including aninner nozzle projecting into said chamber, disposed in position todischarge one gas into the inner end of said outer nozzle, and alsoincluding an annular ing different gases to said head, and means withinthe head to protect the gasesfrom ignition and keep them separate untilthe same are mixed at the inner end of said nozzle, said headhaving achamber communicating with one of said passages, said means including aninner nozzle extending into said chamber from the other passage, acoupling member screwed into place on the head to close said chamber,serving to support the inner end of said outer nozzle in position toreceive the discharge of one gas from said inner nozzle, said outernozzle being carried by and removable with said member withoutdisturbing said inner nozzle, and said chamber having filtering meansfor feeding another gas to said outer nozzle.

4. A welding torch comprising a head, an outer nozzle removably securedto said head, there being a mixing space at the inner end of saidnozzle, separate'passages for supplying difierent gases to said head,and means within the head to vprotect the gases from ignition and keepthem separate until the same are mixed at the inner end of said nozzle,said means including an inner nozzle screwed into said head,communicating with .one of said passages, a perforated sleeve on saidinner nozzle, said sleeve having space between its inner surface andsaid inner nozzle, said head having a removable .member for supportingthe lower edge ofv said sleeve, and non-combustible porous materialbetween said sleeve and the other passage. n

5. In a torch, the combination of a head having a chamber therein, aninner nozzle disposed in said chamber and screwed into said head,separate passages forfeeding gases to said chamber and nozzle, porousnon-combustible and non-heat-conductingmaterial surrounding said nozzle,a coupling member screw-connected to the head to close said chamber,said member -having acentral opening for the end of saidnozzle, meansengaging said member to hold said material in place and feed one gas tosaid opening, and an outer nozzle screw connected to said member anddisposed in alinement with said inner nozzle, whereby said nozzles arerigidly connected in non-engaging relation to each other through saidhead.

6. In a torch, the combination of a head,-

a detachable inner nozzle, an outer nozzle which is detachable from saidhead without disturbing said inner nozzle, said nozzles being disposedin alinement and rigidly connected in non-engaging relation to each.other through said head, porous non-combustible and non-heat-conductingmaterial surrounding said inner nozzle, separate pas sages for feedinggases to said inner nozzle and said material, and means to hold saidmaterial in place and feed one gas to said outer nozzle, said head andouter nozzle having a screw connection the tightening of which serves tohold said means and material in place.

7. In a torch, the combination of a head, a detachable inner nozzle, anouter nozzle which is detachable from said head without disturbing saidinner nozzle, said nozzles being disposed in alinement and rigidlyconnected in non-engaging relation to each other through said head,porous non-combustible and non-heat-conducting material surrounding saidinner nozzle, separate passages for feeding gases to said inner nozzleand said material, and means to hold said material in place and feed onegas to said outer nozzle, said head and outer nozzle having a screwconnection the tightening of which serves to hold said means andmaterial in place, said means being in the form of a perforated annularelement extending around said inner nozzle.

8. In a torch, the combination of a head having a chambertherein, aninner nozzle disposed in said chamber and screwed into said head,separate passages for feeding gases to said chamber and nozzle, porousnon-combustible and non-heat-conducting material surrounding saidnozzle, a coupling member screw-connected to the head to close memberand disposed in alinement with said inner nozzle, whereby said nozzlesare rigidly'connected in non-engaging relation to each other throughsaid head, said means being in the form of a perforated annular elementextending around said inner nozzle.

9. In a torch, the combination of a head, a detachable inner nozzle, anouter nozzle which is detachable from said head without disturbing saidinner nozzle, said nozzles being disposed in alinement and rigidlyconnected in non-engaging relation to each other through said head,porous non-combustible and non-heat-conducting material surrounding saidinner nozzle, separate passages for feeding gases to said inner nozzleand said material, and means to hold said material in place and feed onegas to said outer nozzle, said head and outer nozzle having. a screwconnection the tightening of which serves to hold said means andmateriaLin place, said means being in the form of a perforated annularelement extending around said inner nozzle, said element being aperforated cylinderlinclosing said inner nozzle, and seats for engagingthe opposite ends of said cylinder.

10. In a torch, the combination ofa head having-a chambertherein, aninner nozzle disposed in said chamber and screwed into said head,separate passages for feeding gases to said chamber and nozzle, porousnon-combustible and non-heat-conducting material surrounding saidnozzle, a coupling member screw-connected to the head to close saidchamber, said member having a central opening for the end'of saidnozzle, means engaging said member to hold said material in place andfeed one gas to said opening, and an outer nozzle screw connected tosaid member and disposed in alinement with said inner nozzle, wherebysaid nozzlesare rigidly connected in non-engaging relation to each otherthrough said head, said means being in the form of a perforated annularelement extending around said inner nozzle, said element being aperforated cylinder inclosing said inner nozzle, and seats for engagingthe opposite ends of said cylinder.

11. A torch having a nozzle formed with a recess in the inner endthereof, a tapered sheet-metal mixer in said recess, said mixer 15,

being hollow and formed all around with narrow slots for the passage ofgases, and means to deliver gases to the larger end of said mixer.

Signed by me at Chicago, 111., November 20 10, 1914.

HARRY HOWARD ARMSTRONG.

Vitnesses: v

RACHAEL J. RICHARDSON, Rose E. SEHNEM.

